Re: HELP!!! Welcome to the board. First off, drop sony from your list.
Before we can help we need to know some things like:
1. How much room do you have to work with?
2.Are you looking for sq or spl, sql or what?
3.How much do you have to spend?
Answer this and we will be glad to help you out and get you the best possible.
Re: HELP!!! First off sq = sound quality(how clear it sounds)
spl = sound pressure level(how loud the bass is)
sql = sound quality level(the ability to get loud while retaining sound quality)
Ohms is the resistance of the subwoofers coils. Bridging means to to take 2 channels and combine them to into one like one + and one - of each channel of the amp.
Do you allready have an aftermarket headunit? If not that is a good place to start from.